package com.tk.mall;

import com.tk.mall.tiny.mbg.model.UmsPermission;
import org.springframework.security.core.userdetails.UsernameNotFoundException;

import java.util.List;
import java.util.Random;

/**
 * date: 2022/9/17
 */
public class test {
    public static void main(String[] args) {
//        StringBuilder sb = new StringBuilder();
//        Random random = new Random();
//        for (int i = 0; i < 6; i++) {
//            sb.append(random.nextInt(10));
//        }
//        System.out.println("sb = " + sb);
//        System.out.println("sb = " + sb.toString());
//        String a = "12345";
//        String b = "12";
//        String s = a.substring(b.length());
//        System.out.println("s = " + s);

    }


}
